It is the commutative property of addition
Answer:
y= 15
Step-by-step explanation:
Y= Kxz
y=6 x=1/2 z=6
15= K (1/2) (6)
15= K (3)
K= 5
SO
y= (5) (1/2) (6)
Y= 15
$6 . It will cost $6 because spending 6 dollars , 50 times will equal $300
849-1.5=847.5
6.8-4.8=2
847.5 divided by 2 =423.75